Research on the design of network security situation sensor based on network traffic

The network brings great value and convenience also brings potential risks, malicious activities as viruses and hacker attackswill make the invasion of personal computer information been destroyed or stolen, therefore, the research of network security situation awareness system is becoming very urgent. This paper designed an improved network security situation sensor based on network traffic. By constructing network security situation awareness system, we propose a multi angle and multi granularity traffic aggregation and statistic method, and propose a hierarchical security event detection model. Experimental results show the effectiveness of the detection method.